The 30mm board is similar to the 19mm except that the 'inline' pattern is changed to a staggered design. This allows for a smaller footprint than any other 30mm board. The base plate of the 30mm board is 2.75" wide by 12.0" long with four pre-molded mount holes.
Dimensions
Base - 12" x 2.75" x 6" high (igniter installed, standard length 1 ft.)